Fixing evidence model

models/evidence.js

@@ -1,4 +1,5 @@
 var db = require('../db');
+var s3 = require('../s3');
 
 module.exports = {
   properties: {
@@ -7,17 +8,30 @@ module.exports = {
       primaryKey: true,
       autoIncrement: true
     },
+    key: {
+      type: db.type.STRING,
+      allowNull: false,
+      unique: true
+    },
     mediaType: {
-      type: db.type.ENUM,
-      values: ['image', 'video', 'link'],
+      type: db.type.STRING,
       allowNull: false
     },
     location: {
       type: db.type.STRING,
-      allowNull: false,
-      validate: {
-        isUrl: true
-      }
+      allowNull: false
+    },
+    thumbnail: {
+      type: db.type.STRING,
+      allowNull: false
+    },
+    original: {
+      type: db.type.STRING,
+      allowNull: true
+    },
+    saved: {
+      type: db.type.BOOLEAN,
+      defaultValue: false
     }
   },
   relationships: [
@@ -26,4 +40,20 @@ module.exports = {
       type: 'belongsTo'
     }
   ],
+  instanceMethods: {
+    fetch: function (callback) {
+      // Returns an HTTP(S) request
+      callback(s3.get(this.location));
+    },
+    fetchThumb: function (callback) {
+      // Returns an HTTP(S) request
+      callback(s3.get(this.thumbnail));
+    },
+    getLocationUrl: function () {
+      return '/evidence/' + this.key;
+    },
+    getThumbnailUrl: function () {
+      return '/evidence/' + this.key + '_thumb';
+    }
+  }
 };